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No, not unless you create a way to turn it on and off.

I suspect most people that install light rings aren't terribly concerned about turning them off.

Generic schematic of a reprap controller: http://reprap.org/mediawiki/images/7/70/Controller_final_reprapdiscount.pdf One cable connects speaker, knob press, and lcd. All things you say are working. Also VCC(5V power) and GND are on this connector (which in turns provides 3.3V power for the SD card)...

I'd verify the wiring harness was assembled correctly. Since you have two of them, and one is known working, that should be fairly easy to do. Same color wires to same pin positions in same connectors, etc.

That's generally true in the USA as well. Code requirements only apply to new work, not existing installs. That said, it's still pretty common to find older houses (pre-1970) with ungrounded 3-prong outlets. Not to code, but nothing actually stopped homeowners from updating their outlets anyway for ...

Most of the arduino chips will operate on 3.3V. Of course, the I2C signals from the HE280 are 5V based, ironically having been level-shifted from 3.3V. BTW, if I read the specs on that plug connector correctly, the wires aren't crimped in, they're stuck into a spring connector. Which can be enticed ...

2's complement is what most people expect these days. You don't actually run into 1's complement much anymore, unless you're dealing with antique hardware. On the temperature, the answer is found in the ST forum: https://my.st.com/public/STe2ecommunities/mems_sensors/Lists/Accelerometers/AllItems.as...

I'm glad you spotted the problem! We might have needed pictures again to spot it from my side. And if you want another fun sub-project, did you notice there's a temperature sensor on that accelerometer chip? I could see someone with an enclosed printer using it to monitor enclosure temperature. Yes,...

What mhackney said. The new HE280 zprobe stuff only exists in the Seeme branch of the firmware at this time. At the same time, Seeme has assumed their branch is used solely with their products (using Rambo or Mini-Rambo boards) when making changes, so there may be things that you need to fix just to...

I think you've made a false assumption. The expected settings of ?_HOME_DIR are either 1 or -1, NOT 0. You've understandably confused it with a true/false setting, which in this case it is not. 1 means home upwards and use the MAX endstop switches. -1 means home downward and use the MIN endstop swit...

There are a number of videos linked in the dozuki documentation. Sometimes it's obvious because the picture is also the embedded version of the video. Other times they're only linked in the text, and it's up to you to notice that the very brief instruction is also a video link. Probably wouldn't be ...

... A sharp (quality) pair of wire cutters. I use these to snip filament in preparation for feeding through the extruder. While I have good wire cutters, I've actually been using cat nail trimmers for that purpose. The enclosed style that shears like a cigar cutter. Gives a very good cut. Left over...

If it were me, I'd first check the HE280 voltage regulators to see if they are indeed producing 3.3V and 5V as expected. I'm looking at this schematic and pcb layout: https://github.com/seemecnc/Machine_Elements/blob/master/71210%20HE280PCB%20Files/HE280PCB_v5d.PDF After that you might consider tryi...

If you do end up getting still another supply, I'd recommend going with the industrial type Seeme uses now, or something similar from another source. https://www.seemecnc.com/collections/parts-accessories/products/12-volt-29-amp-dc-power-supply https://www.seemecnc.com/collections/parts-accessories/...

I've no idea what your underlying cause is, since I don't see how you could draw that much power without blowing one of the fuses. But since you now have two power supplies there is an obvious thing to try: Make a temporary hookup to use one for the heat bed rail, and the other one for the rest. If ...

Given your experience so far, I'd look for a better power supply than that wall-wart. It may measure 12V, but it's probably dirty unregulated power. The nano/micro boards don't mount big capacitors like the full-size boards...they assume the input power is pretty clean to start with. Forget the 20V ...

The trick is to keep the both leads from the same coil adjacent. I'll use the letters on your diagram above. (I'll leave it to you to figure out colors if you still need that.) What you want to try is ABCD at the rambo connector. Doesn't matter if it's left-to-right or right-to-left. Try it. If the ...

The Tiny85 has like 5 pins to work with...gotta be compromises on features with that restriction. Functionally the Micro and Nano are close to the same thing. The Micro has a newer cpu with integrated usb, while the nano has an onboard usb to serial chip that talks to the cpu's serial port. You may ...

Try one device at a time on the i2c bus before you worry about multiple devices on the bus.
And make sure you don't have the clock and data lines swapped (I dont remember which arduino pin is which).

Yup, that would do it. Connecting any arduino ground pin to the ground bus line should get you better results.
Connecting VIN to the +12V bus would mean USB power is no longer required. Of course you still need USB for other reasons.

You haven't connected your HE280 ground to the Arduino ground. I2C requires a common ground to function.

I do know the difference!
A screwdriver is orange juice and vodka.
A left-handed screwdriver is grapefruit juice, orange juice and vodka.

2) run a new wire alongside the whip for the fan + and pull ground from the PCB ground. Then you can use a 2 pin connector at the RAMBo end and use one of the available fan connectors. The firmware already supports turning on/off a fan at a temperature threshold. 3) install a small on/off switch on...

The HE280 doesn't need 5V from the Rambo. It has it's own 5V and 3.3V regulators onboard that use the 12V input for the Heat cartridge. The 5V pin on PS_ON is not being used. It's the other pin on that connector that's being used, as an input from the accellerometer probe. Seeme modified their custo...

[email protected] wrote:So is this a digital signal, like edge triggering?

Yes. Not sure whether it's rising or falling edge. Same concept in either case.

The part casting is an interesting idea. As far as the anthills go, I thought you were referring to something like this. http://www.anthillart.com/ He was, although digging them up and displaying them is optional, I guess. Using nature's molds for casting is not limited to anthills and termite moun...